Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/login/auth/mount_manager.h

Index: chrome/browser/chromeos/login/auth/mount_manager.h
diff --git a/chrome/browser/chromeos/login/auth/mount_manager.h b/chrome/browser/chromeos/login/auth/mount_manager.h
index eac4b6b7cb793bb2c4a0a26a2f00468c40cc4ebe..fee5b9b5bdcf422c31d881fc9982a23ea1be1323 100644
--- a/chrome/browser/chromeos/login/auth/mount_manager.h
+++ b/chrome/browser/chromeos/login/auth/mount_manager.h
@@ -6,11 +6,11 @@
 #define CHROME_BROWSER_CHROMEOS_LOGIN_AUTH_MOUNT_MANAGER_H_
 
 #include <map>
+#include <memory>
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 
 class PrefRegistrySimple;